The Lord of the Rings actor shared a hilarious "leaked" video from inside 10 Downing Street.

The clip, which is almost three minutes long, sees motion capture legend Serkis combine the facial expressions and voice of Gollum, a fictional character from Lord of the Rings, with the much-maligned Tory politician.

The parody video, which was posted on Facebook, is captioned: "We's in a nasty mess my precioussss...and there's only one way out....We wants it. We neeeeds it!"

Serkis can be seen dressed up in a silver wig identical to the Prime Minister's hair, makeup and a blue women's blazer, reports Daily Record.

The clip begins with Serkis' back to camera, an aide passing her the Brexit agreement (Image: Facebook)

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At this point, Gollum switches to his kinder counter-part Sméagol - who questions: "But what about the people, it makes them poorer?"

Serkis immediately snaps back to the Gollum version of Theresa May: "I finds it, I negotiates it, we wants it."

She continues to mock the "stupid, tricksy remainers" in a back and forth with her alter-ego - before eventually holding up a version of the Prime Minister's deal, likening it to the ring from Lord of the Rings.

The star makes fun of Remainers and the state the country will be in post Brexit (Image: Facebook)